利用开源项目 FFMpegSharp 实现音视频提取、转码、抓图等操作

开源项目地址：https://github.com/vladjerca/FFMpegSharp

首先需要在 web.config 或 app.config 中配置

  <appSettings>
    <!-- FFMpegSharp 需要的参数 -->
    <add key="ffmpegRoot" value="D:\参考资料\C#\FFmpeg_Binary\ffmpeg-20190325-6e42021-win32and64-shared\" />

  </appSettings>

代码：

using FFMpegSharp;
using FFMpegSharp.FFMPEG;
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Windows.Forms;

namespace UIForms
{
    /// <summary>
    /// https://github.com/vladjerca/FFMpegSharp
    /// </summary>
    public partial class ffmpegTest01 : Form
    {
        public ffmpegTest01()
        {
            InitializeComponent();
        }

        string _videoFileFullPath = @"D:\Workspace\TestVideo.mp4";

        FFMpeg fpeg = new FFMpeg();

        private void btnStart_Click(object sender, EventArgs e)
        {
            string inputFile = _videoFileFullPath;
            string outputFileFullPath = string.Format(@"D:\Workspace\TestVideo-mp4-thumb-{0}.png", DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss"));
            FileInfo output = new FileInfo(outputFileFullPath);

            var video = VideoInfo.FromPath(_videoFileFullPath);

            Bitmap bitImg = fpeg.Snapshot(
                    video,
                    output,
                    //size : new Size(400, 400),
                    captureTime : TimeSpan.FromMinutes()
                );
            if (bitImg != null)
            {
                bitImg.Save(outputFileFullPath, ImageFormat.Png);
                MessageBox.Show("save ok");
            }
            MessageBox.Show("finished");
        }

        private void btnStop_Click(object sender, EventArgs e)
        {

        }

        private void btnGetVideoInfo_Click(object sender, EventArgs e)
        {
            var video = new VideoInfo(_videoFileFullPath);
            string output = video.ToString();
            MessageBox.Show(output);
        }
    }
}

运行截图：

小结：这个工具抓图时没有想象中的那么快，据说 FFmpeg 参数的配置顺序也可能导致慢，详细的请看 https://www.cnblogs.com/wanghetao/p/3420788.html

谢谢浏览！